If delete the object CN=Dhcproot , it uncertainly affects to authorize DHCP, as we can see all our DHCP servers are listed separate in the right pane of
CN=netservices as the CN=DhcpRoot itself.

But, if this object doesn’t exist, we may encounter the situation that it is unable to un-authorize DHCP such as we want to rename or change the DHCP server. That we couldn't delete old DHCP server from
DHCP authorized list.